Kyzer R. Davis

For many applications, such as databases, storing UUIDs as text is unnecessarily verbose, requiring 288 bits to represent 128-bit UUID values. Thus, where feasible, UUIDs SHOULD be stored within database applications as the underlying 128-bit binary value.¶ For other systems, UUIDs MAY be stored in binary form or as text, as appropriate.

UUIDv8 offers variable-size timestamp, clock sequence, and node values which allow for a highly customizable UUID that fits a given application needs.¶ UUIDv8 SHOULD only be utilized if an implementation cannot utilize UUIDv1, UUIDv6, or UUIDv8.

6. UUID Best Practices The minimum requirements for generating UUIDs are described in this document for each version. Everything else is an implementation detail and up to the implementer to decide what is appropriate for a given implementation.